Safety ruler



The safety ruler is a planar piece of metal with a slightly curved extrusion emanating from its dorsal surface, used to cut cardboard, plastic and other items.

FIG. 1 is a perspective view of a Safety Ruler showing my new design;

FIG. 2 is a close-up of a section of the side view more fully illustrated in FIG. 6 thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a back view thereof.

The broken line showing of the human elements and the knife is included for the purpose of illustrating non-claimed subject matter and forms no part of the claimed design. 

The ornamental design for a safety ruler, as shown and described. 